EP1513413A1 - Compositions de prolamine plastifiees - Google Patents

Compositions de prolamine plastifiees

Info

Publication number
EP1513413A1
EP1513413A1 EP03739226A EP03739226A EP1513413A1 EP 1513413 A1 EP1513413 A1 EP 1513413A1 EP 03739226 A EP03739226 A EP 03739226A EP 03739226 A EP03739226 A EP 03739226A EP 1513413 A1 EP1513413 A1 EP 1513413A1
Authority
EP
European Patent Office
Prior art keywords
sarcosine
amino acid
prolamine
blend
acyl derivative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03739226A
Other languages
German (de)
English (en)
Inventor
Jingping Liu
Willy Weisheng Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WM Wrigley Jr Co
Original Assignee
WM Wrigley Jr Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WM Wrigley Jr Co filed Critical WM Wrigley Jr Co
Publication of EP1513413A1 publication Critical patent/EP1513413A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G4/00—Chewing gum
    • A23G4/06—Chewing gum characterised by the composition containing organic or inorganic compounds
    • A23G4/14—Chewing gum characterised by the composition containing organic or inorganic compounds containing peptides or proteins

Definitions

  • the present invention relates to plasticized prolamine mixtures. More specifically, the present invention relates to edible and biodegradable prolamine compositions.
  • Prolamine is a type of protein. Zein is a water-insoluble prolamine obtained from corn. Zein is edible and readily biodegradable, therefore zein is an attractive material for use in food applications. Additionally, zein has been used in industrial applications. In this regard, zein has been used in creating packaging films, coatings, and adhesives.
  • the glass transition temperature of zein is in the range of 136-140°C, making zein a very brittle plastic material at ambient temperatures.
  • zein is usually used in the form of either a fine powder or an alcohol/water solution. This creates processing difficulties that limit the applications of zein.
  • zein is edible and biodegradable, there have been attempts at using zein in products such as chewing gum formulations. Further, when used as a component of chewing gum, the fact that zein becomes brittle after it loses moisture is an advantageous property. This feature eases the removal of zein-containing gum cuds from substrates.
  • the present invention provides plasticized prolamine compositions, processes for making same, and improved biodegradable and edible products such as chewing gums, package films, coatings, adhesives, and encapsulants for drugs, flavors, and sweeteners.
  • the present invention provides for a method of plasticizing a prolamine by combining at least one prolamine and at least one N-acyl derivative of amino acid.
  • a method whereby physical properties of prolamines can be modified by combining at least one prolamine and at least one N- acyl derivative of amino acid.
  • the physical property modified can include chemical structure, consistency, tack, texture and melting point.
  • the present invention provides edible and biodegradable products comprising a plasticized prolamine blend of at least one prolamine and at least one N-acyl derivatives of amino acid.
  • the invention provides for blends comprising at least one prolamine and at least one N-acyl derivative of amino acid.
  • the blend is thermally processable.
  • the prolamines can include zein, corn gluten meal, wheat gluten, wheat gliadin, secalinin, avenin, hordein, panicin, orzenin, kafirin and combinations thereof.
  • the N-acyl derivative of amino acid can include N-cocoyl sarcosine, N-oleoyl sarcosine, N-lauroyl sarcosine, N-myristoy sarcosine, N-stearoyl sarcosine, N- butyroyl sarcosine, N-caproyl sarcosine, N-capryloyl sarcosine, N- palmitoyl sarcosine , N-arachidoyl sarcosine, N-behenoyl sarcosine, N-lignoceroyl sarcosine, N-myristoleoyl sarcosine, N-palmitoleoyl sarcosine, N-erucoyl sarcosine, N-linoleoyl sarcosine, N-linolenoyl sarcosine and
  • N-acyl derivative of amino acid is a reaction product of a reaction between at least one amino acid and at least one fatty acid.
  • amino acids can include alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, valine and combinations thereof.
  • fatty acids can include butyric, caproic, caprylic, capric, lauric, myristic, palmitic, stearic, arachidic, behenic, lignoceric, myristoleic, palmitoleic, oleic, erucic, linoleic, linolenic, arachidonic, eicosapentaenoic, docosahexaenoic and combinations thereof.
  • the prolamine comprises about 5% to about 99.5% by weight of the plasticized blend.
  • the N-acyl derivative of amino acid comprises about 0.5% to about 95% by weight of the plasticized blend.
  • a method of making such plasticized prolamine blends whereby prolamine is combined with N-acyl derivative of amino acid.
  • prolamine and N-acyl derivative of amino acid can be combined using a batch mixer or continuous extruder.
  • prolamine can be combined directly with N-acyl derivative of amino acid.
  • prolamine can first be mixed with an alcohol/water mixture prior to being combined with N-acyl derivative of amino acid.
  • products that contain the plasticized prolamine blends disclosed herein.
  • a method whereby a product is produced by dissolving at least one prolamine in an alcohol/water mixture and adding at least one N-acyl derivative of amino acid to the mixture.
  • chewing gum bases containing plasticized prolamines are disclosed whereby the gum bases include a plasticized blend of prolamine and N-acyl derivative of amino acid.
  • methods for manufacturing such chewing gum bases are provided whereby prolamine is combined with N-acyl derivative of amino acid.
  • chewing gums containing plasticized prolamines and a flavor are provided.
  • biodegradable products containing plasticized prolamines are disclosed.
  • the biodegradable products can include confections, chewing gums, adhesives, coatings, packaging films, and encapsulants for medicaments and flavors and the like.
  • a method is provided whereby a biodegradable product is produced by dissolving at least one prolamine in an alcohol/water mixture and adding at least one N-acyl derivative of amino acid to the mixture.
  • An advantage of the present invention is to provide a more usable form of prolamine such as zein and wheat gluten with properties ranging from pasty adhesives, to rubbery chewing gum bases, to tough packaging films.
  • Another advantage of the present invention is to provide an improved method for incorporating a prolamine, such as zein and wheat gluten, in an edible and biodegradable product. Moreover an advantage of the present invention is to provide an improved edible product that includes zein and wheat gluten and other prolamines.
  • a prolamine such as zein and wheat gluten
  • an advantage of the present invention is to provide an improved process for making mixtures including prolamine.
  • Yet another advantage of the present invention is to provide a prolamine containing mixture that can be altered over a wide range of properties, from a tacky state to a brittle state, through the addition of a N-acyl derivative of amino acids softener.
  • an advantage of the present invention is to provide an improved chewing gum product including a prolamine such as zein, corn gluten meal, wheat gluten, wheat gliadin, secalinin, avenin, hordein, panicin, orzenin, kaf ⁇ rin and their combinations.
  • a prolamine such as zein, corn gluten meal, wheat gluten, wheat gliadin, secalinin, avenin, hordein, panicin, orzenin, kaf ⁇ rin and their combinations.
  • Another advantage of the present invention is to provide an improved edible product including zein, corn gluten meal, wheat gluten, wheat gliadin, and wheat glutenin, secalinin, avenin, hordein, panicin, orzenin, kafirin and their combinations.
  • FIGURES Figure 1 illustrates a schematic view of the process steps of an embodiment of the present invention.
  • the present invention relates to plasticized prolamine mixtures, processes for making same, and products made therefrom.
  • Prolamines which are water-insoluble and alcohol-soluble proteins found in the seeds of cereals, have been used in some consumer applications.
  • Examples of prolamines include zein and gliadin, which are from corn and wheat, respectively.
  • Less pure prolamines include corn gluten meal and wheat gluten.
  • these prolamines also are attractive as materials for uses such as packaging, coatings, adhesives, and encapsulations for medicaments.
  • Plasticized prolamines of the present invention can be used for these and other consumer and industrial applications, including use in manufacturing edible products.
  • edible product is intended to broadly refer to any product that is suitable for consumption by a mammal, preferably human.
  • An edible product can include, but is not limited to, foodstuffs, confections, chewing gums, capsules for medicament delivery, and component parts thereof.
  • pure forms of prolamines typically are not suitable as foodstuffs or for industrial uses without first being processed.
  • pure zein and gliadin are very brittle plastic materials at ambient temperatures. Whether a material is hard or rubbery at ambient temperatures is characterized by its glass transition temperature (Tg). For a non-crystalline material, if its Tg is lower than the ambient temperature, it should be rubbery. Both zein and gliadin have a relatively high Tg, thus they are hard and brittle at ambient temperatures.
  • zein While zein has polar amino acid groups in its main chain, its side chains are composed of more than 50% nonpolar amino acid residues such as leucine, isoleucine, valine, alanine, phenylalanine and glycine. This kind of structure makes zein insoluble in water at neutral pH but highly swellable. Its amphiphilic nature makes zein incompatible with most common plasticizers. Currently, few effective plasticizers of zein are known.
  • a plasticizer varies the firmness of a substance by interposing itself between the macromolecular chains of that substance. This is best accomplished when the attractive forces between the molecules of both components are similar. If the attractive forces are sufficiently dissimilar, immiscibility will result. Attraction forces between molecules typically include dispersion force, polar forces, hydrogen bonding forces and ionic forces. It is well known that ionic forces and hydrogen-bonding typically play important roles in protein dissolution in aqueous solution. In non- aqueous media, the hydrogen-bonding tends to become the major driving force to form blends between zein and plasticizers. Plasticizers are required to possess sufficient electron donors and electron acceptors in their molecular structures in order to form effective hydrogen bonding with zein macromolecules. In this regard, due to the amphiphilic nature of zein, the most effective plasticizers for zein are those that possess a balance of hydrophobic and hydrophilic portions in their molecular structures similar to zein.
  • prolamines such as zein
  • N-acyl derivatives of amino acid such as N-cocyl sarcosine, N-lauroyl sarcosine and N-oleoyl sarcosine.
  • These blends are thermally processable. They can be very soft, even fluxible, before decomposition. In contrast, when sufficiently heated, pure zein and pure gliadin will thermally decompose rather than melt. This thermal processability of the plasticized blends allows the blends to be easily incorporated into edible and biodegradable products such as chewing gum.
  • the mechanical properties of the plasticized prolamine blends can be manipulated greatly. This range extends from a tacky state to a brittle state. The manipulation can be achieved through a change of either the content or the structure of N-acyl derivatives of amino acids, or both.
  • Prolamines that can be plasticized pursuant to the present invention include, but are not limited to, zein, corn gluten meal, wheat gluten, wheat gliadin, rye secalinin, oat avenin, barley hordein, milliet panicin, rice orzenin and sorghum kafirin.
  • N-acyl derivatives of amino acids can be produced from edible amino acids and fatty acids, which are natural food ingredients.
  • the blends of prolamine and N-acyl derivatives of amino acids remain biodegradable and potentially edible.
  • sarcosine, methyl aminoacetic acid and N-methylglycine occur naturally in a wide range of marine organisms such as lobsters, starfish and sea urchin.
  • sarcosine can react with one edible fatty acid, such as lauric acid, oleic acid or coconut acid, to form N-acyl sarcosines, which are biodegradable and have favorable regulatory profiles.
  • the N-acyl derivatives of amino acid is liquid at body temperature.
  • N-acyl derivatives of amino acids can be used.
  • N-cocoyl sarcosine, N-oleoyl sarcosine, N-lauroyl sarcosine and N- myristoyl sarcosine are preferred.
  • N-acyl derivatives of amino acid sarcosines also include N-stearoyl, N-butyroyl, N-caproyl, N-capryloyl, N-palmitoyl, N- arachidoyl, N-behenoyl, N-lignoceroyl, N-myristoleoyl, N-palmitoleoyl, N-erucoyl, N- linoleoyl, N-linolenoyl sarcosines and their combinations.
  • the N-acyl derivatives of amino acids also can include reaction products from reactions of amino acids with fatty acids.
  • the amino acids can include alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine and valine.
  • the fatty acids can include butyric, caproic, caprylic, capric, lauric, myristic, palmitic, stearic, arachidic, behenic, lignoceric, myristoleic, palmitoleic, oleic, erucic, linoleic, linolenic, arachidonic, eicosapentaenoic and docosahexaenoic acids.
  • the prolamine can comprise about 5 to about 99.5% of the blend.
  • prolamine comprises about 20% to about 95% of the blend.
  • the N-acyl derivatives of amino acids can comprise about 0.5 to about 95% of the blend.
  • the N-acyl derivatives of amino acids can comprise about 5% to about 80% of the blend.
  • FIG. 1 illustrates a schematic view of the process steps of this embodiment.
  • prolamine is dissolved in an alcohol/water mixture 10.
  • a variety of alcohols can be used, including low and high molecular weight linear or branched alcohols.
  • Such suitable alcohols include, but are not limited to, methanol, ethanol, propanol, and butanol.
  • N-acyl derivative of amino acid is added to the mixture 12.
  • the mixture is then blended 14.
  • the mixture is eventually dried to remove the solvents, whereupon a plasticized (i.e., softened) prolamine results.
  • an alternative process of making plasticized prolamine blends is provided.
  • prolamine is added to a sigma-blade mixer or the like.
  • An N-acyl derivative of amino acid is then added.
  • Water is optionally added to serve as a co-plasticizer.
  • the blend is discharged.
  • suitable mixers include, but are not limited to, sigma-blade mixers.
  • the end product will be a prolamine blend that preferably has a solid form, that is, powder, pellet, films, or slates. Of course the consistency and shape of the end product will vary greatly depending on the preferences of the practitioner of the present invention. If desired the blend may be kept in solution with, for example, alcohol.
  • the blended compositions of the present invention can be used as chewing gum bases, and as chewing gums when, for example, flavor is added.
  • prolamine compositions are useful in chewing gums because of their elasticity.
  • such compositions provide an environmentally friendly alternative to conventional chewing gums.
  • Chewing gum generally consists of a water insoluble gum base, a water soluble sweetener, and flavors.
  • the insoluble gum base generally comprises elastomers, resins, fats and oils, softeners, and inorganic fillers.
  • the plasticized prolamine compositions of the present invention can form ingestible elastomer substances.
  • the plasticized prolamine elastomer can be further combined with other ingestible ingredients that may include polysaccharides, proteins or their hydrolysates, ingestible emulsifiers, and lipids.
  • Polysaccharides may include native starches, modified starches, dextrins, maltodextrin, hydroxypropylmethylcellulose, dietary fibers, pectins, alginates, carrageenan, gellan gum, xanthan gum, gum arabic, guar gum or other natural gums.
  • the preferred polysaccharides are maltodextrin and high-conversion dextrins.
  • the chewing gum bases comprise approximately 5 to about 10% by weight polysaccharides.
  • polysaccharides include digestible proteins, hydrolyzed collagens or gelatins are preferred; the preferred content is approximately 10 to about 20% by weight in the base.
  • the gum base can also include fillers and optional minor amounts of ingredients such as colorants, antioxidants, etc.
  • Fillers/texturizers may include magnesium and calcium carbonate, ground limestone, silicate types such as magnesium and aluminum silicate, clay, alumina, talc, titanium oxide, mono-, di- and tri-calcium phosphate, cellulose polymers, such as wood, and combinations thereof.
  • Colorants and whiteners may include FD&C-type dyes and lakes, fruit and vegetable extracts, titanium dioxide, and combinations thereof.
  • the base may or may not include wax.
  • An example of a wax-free gum base is disclosed in U.S. Pat. No. 5,286,500, the disclosure of which is incorporated herein by reference.
  • a typical chewing gum composition includes a water soluble bulk portion and one or more flavoring agents.
  • the water soluble portion can include bulk sweeteners, and high intensity sweeteners.
  • Bulk sweeteners include both sugar and sugarless components. Bulk sweeteners typically constitute 5 to about 95% by weight of the chewing gum, more typically, 20 to 80% by weight, and more commonly, 30 to 60% by weight of the gum.
  • Sugar sweeteners generally include saccharide-containing components commonly known in the chewing gum art, including, but not limited to, sucrose, dextrose, maltose, dextrin, dried invert sugar, fructose, levulose, galactose, corn syrup solids, and the like, alone or in combination.
  • Sorbitol can be used as a sugarless sweetener.
  • sugarless sweeteners can include, but are not limited to, mannitol, xylitol, hydrogenated starch hydrolysates, maltitol, lactitol, and the like, alone or in combination.
  • High intensity artificial sweeteners can also be used in combination with the above.
  • Preferred sweeteners include, but are not limited to sucralose, aspartame, salts of acesulfame, alitame, saccharin and its salts, cyclamic acid and its salts, glycyrrhizin, dihydrochalcones, thaumatin, monellin, and the like, alone or in combination.
  • Such techniques as wet granulation, wax granulation, spray drying, spray chilling, fluid bed coating, coacervation, and fiber extension may be used to achieve the desired release characteristics.
  • usage level of the artificial sweeteners will vary greatly and will depend on such factors as potency of the sweetener, rate of release, desired sweetness of the product, level and type of flavor used and cost considerations.
  • the active level of artificial sweetener may vary from 0.02 to about 8%.
  • usage level of the encapsulated sweetener will be proportionately higher.
  • Combinations of sugar and/or sugarless sweeteners may be used in chewing gum. Additionally, the softener may also provide additional sweetness such as with aqueous sugar or alditol solutions.
  • a low calorie gum If a low calorie gum is desired, a low caloric bulking agent can be used.
  • Example of low caloric bulking agents include: polydextrose; Raftilose, Raftilin;
  • Hydrolysate Silicon Fiber
  • indegestible dextrin Fibersol
  • other low calorie bulking agents can be used.
  • flavoring agents can be used.
  • the flavor can be used in amounts of approximately 0.1 to about 15 weight percent of the gum and, preferably, about 0.2 to about 5%.
  • Flavoring agents may include essential oils, synthetic flavors or mixtures thereof including, but not limited to, oils derived from plants and fruits such as citrus oils, fruit essences, peppermint oil, spearmint oil, other mint oils, clove oil, oil of wintergreen, anise and the like.
  • Artificial flavoring agents and components may also be used. Natural and artificial flavoring agents may be combined in any sensorially acceptable fashion.
  • EXAMPLE 1 Preparing Zein Solution Zein (Freeman Industries, Inc., Regular grade) was dissolved in a 70 wt% isopropanol (30% water) mixture to form a 10% solution (10 grams zein + 90 grams solvents).
  • EXAMPLE 2 Preparing a Pure Zein Film A film was cast from 10 grams of the solution described in Example 1 onto a flat-bottom dish with a diameter of 60 mm. It was allowed to dry for 48 hours followed by further drying under vacuum (5mm Hg) for 8 hours. The film was clear yet brittle.
  • EXAMPLE 3 Solution Blending N-cocyl sarcosine (Hampshire, a subsidiary of The Dow Chemical Company) was dissolved in the solution described in Example 1 at a ratio of 1:10 by weight. A film was cast from 10 grams of the solution onto a flat-bottom dish with a diameter of 60 mm. It was allowed to dry for 48 hours followed by further drying under vacuum (5mm Hg) for 8 hours. The film was clear and soft, suggesting good miscibility. It should theoretically contain 1 part N-cocyl sarcosine for every 1 part zein.
  • EXAMPLE 4 Solution Blending N-cocyl sarcosine (Hampshire, a subsidiary of The Dow Chemical Company) was dissolved in the solution described in Example 1 at a ratio of 1:10 by weight. A film was cast from 10 grams of the solution onto a flat-bottom dish with a diameter of 60 mm. It was allowed to dry for 48 hours followed by further drying under vacuum (5mm Hg) for 8 hours. The film was clear and soft
  • N-oleoylsarcosine (Hampshire, a subsidiary of The Dow Chemical Company) was dissolved in the solution described in Example 1 at a ratio of 1:10 by weight.
  • a film was cast from 10 grams of the solution onto a flat-bottom dish with a diameter of 60 mm. It was allowed to dry for 48 hours followed by further drying under vacuum (5mm Hg) for 8 hours. The film was clear and soft, suggesting good miscibility. It should theoretically contain 1 part of N-oleoyl sarcosine for every 1 part zein.
  • EXAMPLE 5 Solution Blending N-lauroyl sarcosine (Hampshire, a subsidiary of The Dow Chemical Company) was dissolved in the solution described in Example 1 at a ratio of 1:10 by weight.
  • a film was cast from 10 grams of the solution onto a flat-bottom dish with a diameter of 60 mm. It was allowed to dry for 48 hours followed by further drying under vacuum (5mm Hg) for 8 hours. The film was clear and soft, suggesting good miscibility. It should theoretically contain 5 parts N-lauroyl sarcosine for every 5 parts zein.
  • N-myristoyl sarcosine (Hampshire, a subsidiary of The Dow Chemical Company) was dissolved in the solution described in Example 1 at a ratio of 1:20 by weight.
  • a film was cast from 10 grams of such solution onto a flat-bottom dish with a diameter of 60 mm. It was allowed to dry for 48 hours followed by further drying under vacuum (5mm Hg) for 8 hours. The film was clear and soft, suggesting good miscibility. It should theoretically contain 1 part N-myristoyl sarcosine for every 2 parts zein.
  • EXAMPLE 8 Direct Blending To a Sigma-blade laboratory mixer (Plasti-Corder Digi-System, C.W. Brabender Instruments, Inc., South Hackensack, NJ), 36 grams of zein were added, and then 15 grams of N-oleoylsarcosine and 15 grams of water were added during agitation. The mixer was set at 50°C and 32 rpm. After mixing for 20 minutes, the blend was discharged. It was soft, elastic, and translucent, indicating good miscibility.
  • EXAMPLE 9 Preparing a Chewing Gum To the Brabender mixer set at 60°C and 30 rpm, 50 grams of the zein/N- oleoylsarcosine blend prepared in Example 8 were added and agitated for 10 minutes. Then 6 grams of mannitol and 0.5 grams of acesulfame K were added. After 10 more minutes of further mixing, 0.5 ml fruit flavor was added and mixed for another 10 minutes. Then the gum was discharged, rolled to a sheet, and cut into gum cubes. It was soft, pliable, and has a lasting chewing texture similar to a conventional chewing gum. Samples of chewed gum cuds were placed on an outdoor surface and remained undisturbed for two weeks. Thereafter the gum cuds showed obvious signs of degradation such as drying, cracking and disintegration.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Confectionery (AREA)
  • Cosmetics (AREA)
  • Medicinal Preparation (AREA)

Abstract

L'invention concerne des compositions de prolamine plastifiées et des méthodes de préparation de celles-ci (10, 12, 14). Ces compositions peuvent être utilisées dans la fabrication de bases pour chewing gum, en particulier des bases pour chewing gum biodégradables. Les plastifiants de l'invention sont sélectionnés dans un groupe de dérivés N-acyle d'acides aminés. Ces compositions sont également utilisées dans la fabrication d'autres produits comestibles, ainsi que dans la fabrication de films d'emballage, de revêtements et d'adhésifs sans danger pour l'environnement, et de véhicules d'encapsulation d'administration de médicaments et autres.
EP03739226A 2002-06-20 2003-06-20 Compositions de prolamine plastifiees Withdrawn EP1513413A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US177831 1994-01-05
US10/177,831 US6733578B2 (en) 2002-06-20 2002-06-20 Plasticized prolamine compositions
PCT/US2003/019468 WO2004000030A1 (fr) 2002-06-20 2003-06-20 Compositions de prolamine plastifiees

Publications (1)

Publication Number Publication Date
EP1513413A1 true EP1513413A1 (fr) 2005-03-16

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EP03739226A Withdrawn EP1513413A1 (fr) 2002-06-20 2003-06-20 Compositions de prolamine plastifiees

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US (1) US6733578B2 (fr)
EP (1) EP1513413A1 (fr)
CN (1) CN1662148A (fr)
AU (1) AU2003245598A1 (fr)
WO (1) WO2004000030A1 (fr)

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WO2004000030A1 (fr) 2003-12-31
US6733578B2 (en) 2004-05-11
AU2003245598A1 (en) 2004-01-06
US20030235639A1 (en) 2003-12-25

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